Question

Based on the supporting details for main fact 1, which topic sentence would you expect to read?

a. Although it is a vegetarian, the hippopotamus can run and catch food easily.
b. The body features of the hippopotamus are a deadly combination.
c. Hippopotamuses have been known to cause death in many different ways.
d. I think that the hippopotamus has really cool, interesting, and unusual features.
please help